1604563742165 has 8 divisors (see below), whose sum is σ = 1987588635648. Its totient is φ = 1242242897040.

The previous prime is 1604563742137. The next prime is 1604563742167. The reversal of 1604563742165 is 5612473654061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1604563742165 - 2²⁰ = 1604562693589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604563742167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5176011917 + ... + 5176012226.

It is an arithmetic number, because the mean of its divisors is an integer number (248448579456).

Almost surely, 2^{1604563742165} is an apocalyptic number.

It is an amenable number.

1604563742165 is a deficient number, since it is larger than the sum of its proper divisors (383024893483).

1604563742165 is a wasteful number, since it uses less digits than its factorization.

1604563742165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10352024179.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 1604563742165 in words is "one trillion, six hundred four billion, five hundred sixty-three million, seven hundred forty-two thousand, one hundred sixty-five".